This part fits following boilers:
| Fits Appliance(s) | GC No. | |
| Baxi Combi 80 Eco | - | 47-075-05 |
| Baxi Combi 80 Maxflue | - | 47-075-07 |
| Baxi Combi 80E | - | 47-075-06 |
| Baxi Combi Instant 105 E | - | 47-075-09 |
| Baxi Combi Instant 80E | - | 47-075-13 |
| Baxi Maxflow Combi WM | - | 47-075-03 |
| Baxi System 35/60 | - | 41-075-18 |
| Baxi System 60/100 | - | 41-075-19 |
| Potterton Performa 24 | - | 47-393-06 |
| Potterton Performa 28 | - | 47-393-07 |
| Potterton Performa 28I | - | 47-393-08 |
| Potterton Performa System 28e | - | 41-590-91 |